Table 2

Relative hazards of health outcomes by quartile of 1996 census-tract level median household income based on Cox proportional hazards models

Acute MIHypertensionDiabetesAsthmaAll-cause mortality
n=28 858n=24 019n=26 664n=66 627n=28 858
464 cases4625 cases2436 cases2451 cases2131 deaths
Neighbourhood level SEP
 Q1 (lowest)1 (ref)1 (ref)1 (ref)1 (ref)1 (ref)
 Q21.17 (0.89–1.52)1.06 (0.98–1.14)1.00 (0.88–1.14)0.94 (0.81–1.09)1.17 (1.01–1.34)*
 Q30.79 (0.57–1.09)1.09 (0.99–1.19)†0.98 (0.85–1.13)0.82 (0.69–0.97)*0.87 (0.75–1.02)†
 Q4 (highest)1.05 (0.70–1.57)1.12 (0.94–1.32)1.01 (0.84–1.21)1.03 (0.86–1.24)0.96 (0.72–1.27)
 P for trend (Q1–Q4)0.490.120.950.550.26
 P for trend (Q1–Q3)0.410.05†0.680.07†0.44
  • All models are adjusted for individual age, gender, baseline number of physician visits and number of admissions to hospitals, EA-level mean household income, CT-level percentages of each of black residents, recent immigrants (within the last 5 years) and residents living in the same house over the previous 5 years and forward sortation area. SEs are adjusted for within-EA clustering. 95% confidence intervals are shown in parentheses.

  • *Statistically significant at 0.05 level.

  • †Statistically significant at 0.10 level.

  • CT, census tract; EA, enumeration area; MI, myocardial infarction; SEP, socioeconomic position.